On the first full day of our expedition, we drove the short distance north to old St Augustine. This is where we really knew that we weren't in New England anymore.
Of course it was hot and humid, but that happens sometimes at home. But the whole setting was different - the trees and the buildings, the big sky view unobstructed by hills, even the way people dressed.
St Augustine is the oldest continuously occupied town in the current USA, predating Plymouth by 55 years. Plymouth's claim to fame is that, due to where the Mayflower finally reached shore, it was outside of any charter except their own, the Mayflower Compact. St Augustine was the well-supplied and well-supported administrative center of an important Spanish and later British colony for over 200 years. The fort is impressive and well-preserved.
Across the street from the fort is the busy historic shopping district, mostly along pedestrian-only St George Street.
In retrospect, we see that this was some of the best shopping that we found in the Sunshine State, certainly better than Miami Beach and Key West, if you like independent bookstores, gourmet shops, kitchen supplies, etc.